manifold identification 1newton acceleration 1nonconvex optimization 1sparse optimization 1stiefel manifold 1
From the 1 of 2 linked papers with an AI index.
2 papers
math.OC2026
From Manifold Identification to Newton Acceleration on Intersections: Sparse Stiefel Optimization
Shixiang Chen, Wen Huang
The paper develops a Newton‑accelerated algorithm (MIX) for sparse composite optimization on the Stiefel manifold, handling both transverse and non‑transverse intersections by iden…
math.OC2026
Retractions by Alternating Projections
Shixiang Chen, Yixiao He, Wen Huang
Alternating projections and their variants are classical tools for computing points in intersections of sets. Existing analyses for smooth manifolds mainly focus on local convergen…